先分母通分,然后分子相加减。具体过程如图所示,请忽略字体难看
3/4+1/6-2/3脱式计算解:3/4+1/6-2/3=11/12-2/3=3/12=1/4
=9/12+2/12-8/12=3/12=1/4
3/4+1/6-2/3=9/12+2/12-8/12=1/4